[Bug 221505] REGRESSION][amd_pstate] "EPP cannot be set under performance policy" (EBUSY) when switching to performance profile via PPD on 7.1

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=221505

--- Comment #6 from Sergey (sergeyluashkov@gmail.com) ---
(In reply to Mario Limonciello (AMD) from comment #5)
> Yes - this is expected behavior with the series right now.  I am proposing
> to drop the kconfig and make the dynamic epp mode opt in at runtiem or
> kernel command line.
> 
> https://lore.kernel.org/linux-pm/20260512221947.1652988-1-mario.
> limonciello@amd.com/

I’ve tested the proposed patch on my Ryzen AI Max+ (Strix Halo) system (ASUS
FA401EA), and here are the results:

With amd_dynamic_epp=enable:
The issue described in the Comment 4.

With amd_dynamic_epp disabled (or no parameter):
The issue described in the Description

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